公开(公告)号：US20120320996A1

公开(公告)日：2012-12-20

申请号：US13526227

申请日：2012-06-18

申请人： ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  RAMANUJA VEDANTHAM ,  KUMARAN VIJAYASANKAR ,  GANG XU

发明人： ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  RAMANUJA VEDANTHAM ,  KUMARAN VIJAYASANKAR ,  GANG XU

IPC分类号： H04B3/00

CPC分类号： H04B3/54 ,  H04B2203/5416 ,  H04B2203/5425 ,  H04B2203/5495

摘要： A method of powerline communications between a plurality of nodes on a powerline communications (PLC) channel including a first node and a second node. At least one communication quality measure is determined for the PLC channel. Based on the communication quality measure, a preamble of a data frame is dynamically switched between a reference preamble having a reference symbol length including a reference number of syncP symbols and a reference number of syncM symbols and at least a first extended preamble having an extended symbol length that is greater than (>) the reference symbol length. The data frame is then transmitted on the PLC channel.

摘要翻译： 一种在包括第一节点和第二节点的电力线通信（PLC）信道上的多个节点之间的电力线通信的方法。 为PLC通道确定至少一个通信质量度量。 基于通信质量测量，在具有包括参考数量的syncP符号的参考符号长度和参考数量的syncM符号的参考前同步码和至少具有扩展符号的第一扩展前同步码之间动态地切换数据帧的前导码 长度大于（>）参考符号长度。 然后在PLC通道上传输数据帧。

公开(公告)号：US20120320932A1

公开(公告)日：2012-12-20

申请号：US13528667

申请日：2012-06-20

申请人： GANG XU ,  RAMANUJA VEDANTHAM ,  KUMARAN VIJAYASANKAR ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  XIAOLIN LU

发明人： GANG XU ,  RAMANUJA VEDANTHAM ,  KUMARAN VIJAYASANKAR ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  XIAOLIN LU

IPC分类号： H04L29/02 ,  H04B3/54

CPC分类号： H04L69/22 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408

摘要： A method of powerline communications including a first node and at least a second node on a PLC channel in a PLC network. The first node sends a physical layer (PHY) data frame on the PLC channel including a preamble, PHY header, a MAC header and a MAC payload. The PHY header includes a destination address field having a destination address therein. The second node receives the data frame. The second node compares its network address to the destination address before decoding the MAC header and MAC payload, providing power savings by allowing the second node to not decode the MAC header or MAC payload if its network address does not match the destination address in the PHY header of the data frame.

摘要翻译： 一种电力线通信方法，包括PLC网络中PLC通道上的第一节点和至少第二节点。 第一节点在PLC信道上发送物理层（PHY）数据帧，包括前导码，PHY头，MAC头和MAC有效载荷。 PHY标头包括其中具有目的地地址的目的地地址字段。 第二个节点接收数据帧。 第二节点在解码MAC报头和MAC有效载荷之前将其网络地址与目标地址进行比较，通过允许第二节点如果其网络地址与PHY中的目标地址不匹配，则不解码MAC报头或MAC有效载荷，从而提供功率节省 数据帧的头。

公开(公告)号：US20120324322A1

公开(公告)日：2012-12-20

申请号：US13528191

申请日：2012-06-20

申请人： RAMANUJA VEDANTHAM ,  GANG XU ,  KUMARAN VIJAYASANKAR ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  XIAOLIN LU

发明人： RAMANUJA VEDANTHAM ,  GANG XU ,  KUMARAN VIJAYASANKAR ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM ,  XIAOLIN LU

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： G06F11/1004 ,  H03M13/09

摘要： A method of powerline communications including a first node and at least a second node on a powerline communications (PLC) channel in a PLC network. The first node sends a physical layer (PHY) data frame on the PLC channel including a preamble, a PHY header, a MAC header and a MAC payload. The MAC header includes a Cyclic Redundancy Check (CRC) field (MH-CRC field). The second node receives the data frame, parses the MAC header to reach the MH-CRC field, and performs CRC verification using the MH-CRC field to verify the MAC header. If the CRC verification is successful, (i) the second node parses another portion of the MAC header to identify a destination address of the data frame and (ii) to determine whether the data frame is intended for the second node from the destination address.

摘要翻译： 一种包括PLC网络中电力线通信（PLC）通道上的第一节点和至少第二节点的电力线通信的方法。 第一节点在PLC信道上发送物理层（PHY）数据帧，包括前同步码，PHY报头，MAC报头和MAC有效载荷。 MAC报头包括循环冗余校验（CRC）字段（MH-CRC字段）。 第二节点接收数据帧，解析MAC报头到达MH-CRC字段，并使用MH-CRC字段进行CRC校验，以验证MAC报头。 如果CRC验证成功，则（i）第二节点解析MAC报头的另一部分以识别数据帧的目的地址，以及（ii）从目的地地址确定数据帧是否用于第二节点。

公开(公告)号：US20120257682A1

公开(公告)日：2012-10-11

申请号：US13442248

申请日：2012-04-09

申请人： ANAND G. DABAK ,  GANG XU

发明人： ANAND G. DABAK ,  GANG XU

IPC分类号： H04B3/54

CPC分类号： H04B3/54 ,  H04B2203/542

摘要： A method of power line communications includes obtaining timing information for an AC mains signal transmitted on a power line in a power line communication (PLC) system that includes at least one receiver and at least one other device connected on the power line which provides variable loading during cycles of the AC mains signal. A first loading interval within at least a first cycle of the cycles having lower loading and at least a second loading interval within said first cycle having higher loading are identified using the timing information. At least one data packet is transmitted only during the first loading interval over the power line to the receiver.

摘要翻译： 电力线通信的方法包括获得在包括至少一个接收器的电力线通信（PLC）系统中的电力线上传输的AC电力信号的定时信息，以及连接在电力线上的至少一个其他设备，其提供可变负载 在交流电源信号的周期。 使用定时信息来识别在具有较高负载的所述第一周期内具有较低负载和至少第二负载间隔的周期的至少第一周期内的第一加载间隔。 至少一个数据分组仅在电力线上的第一加载间隔期间被发送到接收机。

公开(公告)号：US20110052000A1

公开(公告)日：2011-03-03

申请号：US12551395

申请日：2009-08-31

申请人： WESLEY KENNETH COBB ,  MING-JUNG SEOW ,  GANG XU

发明人： WESLEY KENNETH COBB ,  MING-JUNG SEOW ,  GANG XU

IPC分类号： G06K9/00

CPC分类号： G06K9/00771 ,  G06K9/00335 ,  G06K9/00718 ,  G06K9/6284 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/30232 ,  G06T2207/30241

摘要： Techniques are disclosed for determining anomalous trajectories of objects tracked over a sequence of video frames. In one embodiment, a symbol trajectory may be derived from observing an object moving through a scene. The symbol trajectory represents semantic concepts extracted from the trajectory of the object. Whether the symbol trajectory is anomalous may be determined, based on previously observed symbol trajectories. A user may be alerted upon determining that the symbol trajectory is anomalous.

摘要翻译： 公开了用于确定通过视频帧序列跟踪的对象的异常轨迹的技术。 在一个实施例中，可以从观察通过场景移动的对象导出符号轨迹。 符号轨迹表示从对象的轨迹中提取的语义概念。 可以基于先前观察到的符号轨迹来确定符号轨迹是否是异常的。 在确定符号轨迹是异常的时候可以警告用户。

公开(公告)号：US20090063081A1

公开(公告)日：2009-03-05

申请号：US12196328

申请日：2008-08-22

申请人： GANG XU

发明人： GANG XU

IPC分类号： G01R35/00

CPC分类号： G01R35/02 ,  G01D3/022 ,  G01D18/008

摘要： An integrated circuit chip for calibrating a bridge sensor is described. The integrated circuit (IC) comprises a voltage regulator for providing a voltage to drive the sensor and the integrated circuit; a temperature sensor for measuring a temperature of the environment; a programmable gain amplifier having inputs connected to the sensor for receiving differential outputs of the sensor; a programmable offset generator for performing analog coarse calibration of the bridge sensor offset by providing an offset value to the input of the programmable gain amplifier; an analog multiplex selects either the programmable gain amplifier output or the environment temperature measurement from the temperature sensor as output; a high resolution analog-to-digital converter quantizes the output of the analog multiplex; a processor for performing digital fine calibration by calculating calibration coefficients for a selected set of parameters including the offset of the bridge sensor, temperature coefficients of the bridge sensor sensitivity and nonlinearity of the sensitivity; and a digital memory unit for storing the coarse calibration offset value and the calculated fine calibration coefficients.

摘要翻译： 描述了用于校准桥式传感器的集成电路芯片。 集成电路（IC）包括用于提供电压以驱动传感器和集成电路的电压调节器; 用于测量环境温度的温度传感器; 可编程增益放大器，其具有连接到所述传感器的输入，用于接收所述传感器的差分输出 可编程偏移发生器，用于通过向可编程增益放大器的输入提供偏移值来执行桥传感器偏移的模拟粗略校准; 模拟复用器选择来自温度传感器的可编程增益放大器输出或环境温度测量作为输出; 高分辨率模数转换器对模拟多路复用的输出进行量化; 用于通过计算所选择的一组参数的校准系数来执行数字精细校准的处理器，包括桥式传感器的偏移量，桥式传感器灵敏度的温度系数和灵敏度的非线性度; 以及用于存储粗校准偏移值和计算的精细校准系数的数字存储单元。

公开(公告)号：US20110052068A1

公开(公告)日：2011-03-03

申请号：US12551276

申请日：2009-08-31

申请人： WESLEY KENNETH COBB ,  David FRIEDLANDER ,  RAJKIRAN KUMAR GOTTUMUKKAL ,  MING-JUNG SEOW ,  GANG XU

发明人： WESLEY KENNETH COBB ,  David FRIEDLANDER ,  RAJKIRAN KUMAR GOTTUMUKKAL ,  MING-JUNG SEOW ,  GANG XU

IPC分类号： G06K9/46

CPC分类号： G06K9/6251 ,  G06K9/00771

摘要： Techniques are disclosed for identifying anomaly object types during classification of foreground objects extracted from image data. A self-organizing map and adaptive resonance theory (SOM-ART) network is used to discover object type clusters and classify objects depicted in the image data based on pixel-level micro-features that are extracted from the image data. Importantly, the discovery of the object type clusters is unsupervised, i.e., performed independent of any training data that defines particular objects, allowing a behavior-recognition system to forgo a training phase and for object classification to proceed without being constrained by specific object definitions. The SOM-ART network is adaptive and able to learn while discovering the object type clusters and classifying objects and identifying anomaly object types.

摘要翻译： 公开了用于在从图像数据提取的前景对象的分类期间识别异常对象类型的技术。 基于从图像数据提取的像素级微特征，使用自组织图和自适应共振理论（SOM-ART）网络来发现对象类型簇并对图像数据中描绘的对象进行分类。 重要的是，对象类型簇的发现是无监督的，即独立于定义特定对象的任何训练数据执行，允许行为识别系统放弃训练阶段，并且对象分类进行而不受特定对象定义的约束。 SOM-ART网络是自适应的，能够在发现对象类型集群并分类对象并识别异常对象类型时学习。

公开(公告)号：US20110044498A1

公开(公告)日：2011-02-24

申请号：US12543242

申请日：2009-08-18

申请人： WESLEY KENNETH COBB ,  BOBBY ERNEST BLYTHE ,  DAVID SAMUEL FRIEDLANDER ,  RAJKRAN KUMAR GOTTUMUKKAL ,  MING-JENG SEOW ,  GANG XU

发明人： WESLEY KENNETH COBB ,  BOBBY ERNEST BLYTHE ,  DAVID SAMUEL FRIEDLANDER ,  RAJKRAN KUMAR GOTTUMUKKAL ,  MING-JENG SEOW ,  GANG XU

IPC分类号： G06K9/00

CPC分类号： G06T11/206

摘要： Techniques are disclosed for visually conveying a trajectory map. The trajectory map provides users with a visualization of data observed by a machine-learning engine of a behavior recognition system. Further, the visualization may provide an interface used to guide system behavior. For example, the interface may be used to specify that the behavior recognition system should alert (or not alert) when a particular trajectory is observed to occur.

摘要翻译： 公开了用于视觉地传送轨迹图的技术。 轨迹图为用户提供行为识别系统的机器学习引擎所观察到的数据可视化。 此外，可视化可以提供用于指导系统行为的接口。 例如，接口可以用于指定当观察到特定轨迹发生时行为识别系统应该警告（或不警报）。